(NEWSCHANNEL 3) - Every year on Labor Day, tens of thousands make their way to the mighty mac for the annual Mackinac Bridge Walk.

But this year, the event will be much different compared to years past.

For the first time in 60 years, the bridge will be closed to all traffic during the walk.

The Mackinac Bridge Authority says global terror attacks involving vehicles prompted them to make the change.

"Anytime the bridge is closed for anything, there's concern, but we've hear a lot of people voice support for the decision, because it really is for the safety of the participants in the walk," said Michigan Department of Transportation spokesperson James Lake.

M-DOT and bridge workers met Thursday to go over the new security procedures.

The only vehicles allowed on the bridge will be state police and buses that will take participants back across the bridge when the walk is over.